/******************************************************************************************
**  Copyright 2023 Hangzhou Zhicun (Witmem) Technology Co., Ltd.  All rights reserved.   **
**                                                                                       **
**  This program is free software: you can redistribute it and/or modify                 **
**  it under the terms of the GNU General Public License as published by                 **
**  the Free Software Foundation, either version 3 of the License, or                    **
**  (at your option) any later version.                                                  **
**                                                                                       **
**  This program is distributed in the hope that it will be useful,                      **
**  but WITHOUT ANY WARRANTY; without even the implied warranty of                       **
**  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                        **
**  GNU General Public License for more details.                                         **
**                                                                                       **
**  You should have received a copy of the GNU General Public License                    **
**  along with this program.  If not, see http://www.gnu.org/licenses/.                  **
*******************************************************************************************/

#ifndef SERIALWORK_H
#define SERIALWORK_H

#include <QObject>
#include <QByteArray>
#include <QSerialPort>
#include <QSerialPortInfo>
#include <QMessageBox>
#include <QDebug>
#include <QVector>
#include <QtEndian>
#include <QFileInfo>
#include <QFile>
#include <QMap>
#include <QMutex>
#include <QQueue>
#include <QTimer>
#include "FileDealManger.h"
#include <QThread>

enum ParseType
{
    StateIdle  = 0,
    StateRecvLen,
    StateRecvExtFlag,
    StateRecvExtension,
    StateRecvCMD,
    StateRecvSubCMD,
    StateRecvMsgid,
    StateRecvBody,
    StateRecvCRC,
    StateRecvEnd,
};

struct ParseBuffer
{
    enum ParseType ParseType;
    int bodyLen;
    int crcLen;
    int headLen;
    int extLen;
    int extBufLen;
    int msgidLen;
    ushort allLen;
    uchar extFlag;
    uchar cmd;
    uchar subCmd;
    ushort msgid;
    uchar num;

    uchar bufHead[2] = {0};
    uchar bufMsgid[2] = {0};
    QVector <uchar > bufBody;
    QVector <uchar > bufExt;
    uchar bufCRC[2] = {0};
};

static uint16_t _crc_table[256] = {
    0x0000, 0xc0c1, 0xc181, 0x0140, 0xc301, 0x03c0,
    0x0280, 0xc241, 0xc601, 0x06c0, 0x0780, 0xc741,
    0x0500, 0xc5c1, 0xc481, 0x0440, 0xcc01, 0x0cc0,
    0x0d80, 0xcd41, 0x0f00, 0xcfc1, 0xce81, 0x0e40,
    0x0a00, 0xcac1, 0xcb81, 0x0b40, 0xc901, 0x09c0,
    0x0880, 0xc841, 0xd801, 0x18c0, 0x1980, 0xd941,
    0x1b00, 0xdbc1, 0xda81, 0x1a40, 0x1e00, 0xdec1,
    0xdf81, 0x1f40, 0xdd01, 0x1dc0, 0x1c80, 0xdc41,
    0x1400, 0xd4c1, 0xd581, 0x1540, 0xd701, 0x17c0,
    0x1680, 0xd641, 0xd201, 0x12c0, 0x1380, 0xd341,
    0x1100, 0xd1c1, 0xd081, 0x1040, 0xf001, 0x30c0,
    0x3180, 0xf141, 0x3300, 0xf3c1, 0xf281, 0x3240,
    0x3600, 0xf6c1, 0xf781, 0x3740, 0xf501, 0x35c0,
    0x3480, 0xf441, 0x3c00, 0xfcc1, 0xfd81, 0x3d40,
    0xff01, 0x3fc0, 0x3e80, 0xfe41, 0xfa01, 0x3ac0,
    0x3b80, 0xfb41, 0x3900, 0xf9c1, 0xf881, 0x3840,
    0x2800, 0xe8c1, 0xe981, 0x2940, 0xeb01, 0x2bc0,
    0x2a80, 0xea41, 0xee01, 0x2ec0, 0x2f80, 0xef41,
    0x2d00, 0xedc1, 0xec81, 0x2c40, 0xe401, 0x24c0,
    0x2580, 0xe541, 0x2700, 0xe7c1, 0xe681, 0x2640,
    0x2200, 0xe2c1, 0xe381, 0x2340, 0xe101, 0x21c0,
    0x2080, 0xe041, 0xa001, 0x60c0, 0x6180, 0xa141,
    0x6300, 0xa3c1, 0xa281, 0x6240, 0x6600, 0xa6c1,
    0xa781, 0x6740, 0xa501, 0x65c0, 0x6480, 0xa441,
    0x6c00, 0xacc1, 0xad81, 0x6d40, 0xaf01, 0x6fc0,
    0x6e80, 0xae41, 0xaa01, 0x6ac0, 0x6b80, 0xab41,
    0x6900, 0xa9c1, 0xa881, 0x6840, 0x7800, 0xb8c1,
    0xb981, 0x7940, 0xbb01, 0x7bc0, 0x7a80, 0xba41,
    0xbe01, 0x7ec0, 0x7f80, 0xbf41, 0x7d00, 0xbdc1,
    0xbc81, 0x7c40, 0xb401, 0x74c0, 0x7580, 0xb541,
    0x7700, 0xb7c1, 0xb681, 0x7640, 0x7200, 0xb2c1,
    0xb381, 0x7340, 0xb101, 0x71c0, 0x7080, 0xb041,
    0x5000, 0x90c1, 0x9181, 0x5140, 0x9301, 0x53c0,
    0x5280, 0x9241, 0x9601, 0x56c0, 0x5780, 0x9741,
    0x5500, 0x95c1, 0x9481, 0x5440, 0x9c01, 0x5cc0,
    0x5d80, 0x9d41, 0x5f00, 0x9fc1, 0x9e81, 0x5e40,
    0x5a00, 0x9ac1, 0x9b81, 0x5b40, 0x9901, 0x59c0,
    0x5880, 0x9841, 0x8801, 0x48c0, 0x4980, 0x8941,
    0x4b00, 0x8bc1, 0x8a81, 0x4a40, 0x4e00, 0x8ec1,
    0x8f81, 0x4f40, 0x8d01, 0x4dc0, 0x4c80, 0x8c41,
    0x4400, 0x84c1, 0x8581, 0x4540, 0x8701, 0x47c0,
    0x4680, 0x8641, 0x8201, 0x42c0, 0x4380, 0x8341,
    0x4100, 0x81c1, 0x8081, 0x4040
};

class SerialWork : public QObject
{
    Q_OBJECT
public:
    static SerialWork *instance() {
        static SerialWork instance;
        return &instance;
    }
    ~SerialWork();
    int processData(uchar command, uchar subCommand, QByteArray data);
    bool getSerialIsoOpen();
    void startWriteTimer();
    void stopWriteTimer();
    uint16_t crc16(const void* buf, int len)
    {
        uint16_t r = 0xFFFF;
        const uint8_t* ptr = (const uint8_t*)buf;

        while (len-- > 0) {
            r = (_crc_table[(r & 0xFF) ^ (*ptr++)]) ^ ((r >> 8) & 0xFF);
        }
        return r;
    }

signals:
    void signalFlashData(QString,int);
    void signaSerialportStateChanged(bool state);
    void signaShowMesgbox(QString);
    void signaShowMegDevStatus(QString);
    void signaShowMesgboxDialog(QString);
    void signalInitUIData(bool isOpen);
    void signalShowVolumeCurrNum(uchar leftChannel, uchar rightChannel,int nShowType);
    void signalShowBar(int maxValue, int Value);
    void signalContinueWriteData(uchar ret);
    void signalOperationResult(uchar cmd, uchar subCmd,uchar result);
    void signalShowCfgCmdReadData(int nReadMode,QVector <uchar > &boyData);
    void signalShowAlgCmdReadData(int nReadMode,QVector <uchar > &boyData);
    void signalShowUpdateCmdReadData(int nReadMode,QVector <uchar > &boyData);

    void signalCMDWriteFinshed(int size, int nBarType);
    void signalCMDAllFinshed();

    void signaleStartTimer();
    void signaleStopTimer();

    void signalShowNoOper();
    void signalShowChannelCountDefault();
public slots:
    void slotFlashReadToUiOrFile(int);
    void slotInitSerial(QString port, int baudRate);
    void slotCloseSerial();

private:
    SerialWork();
    SerialWork(const SerialWork&) = delete;
    SerialWork& operator=(const SerialWork&) = delete;

    void parseData(QByteArray data);
    void saveData(ParseBuffer,ushort msgid);
    QString numToString(QVector<uchar> &,int);
    QByteArray intToArry16(int nData);

public:
    void enqueueCommand(const QByteArray &command);
    void sendNextCommand();

public:
    QSerialPort *m_pSerialIo = nullptr;
private:
    ushort m_msgid = -2;
    ushort m_sSerialReturnMsgID = 0;
    bool m_isSendData = true;
    ParseBuffer m_parseBuf;
    int m_flashReadToUiOrFile = 0;
    QMap<uchar, QString> m_errMap;
    QTimer *m_pTimeOutTimer = nullptr;
private:
    static QMutex mutexQueue;
    QQueue<QByteArray> m_qCommandQueue;
    bool m_bWaitingForResponse = false;
    ushort m_sSendMsgID = 0;
    QByteArray m_arraySendCommand;
};

#endif // SERIALWORK_H
